PoC Index

CVE-2021-4226

CRITICAL 9.8EPSS 0.5%

RSFirewall tries to identify the original IP address by looking at different HTTP headers. A bypass is possible due to the way it is implemented.

CVSS v3.1
9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v3.1
9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
0.51% chance of exploitation in the next 30 days, 41th percentile
Published
2022-12-15
Updated
2025-04-21

Proof-of-concept exploits (1)

References

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